Observe figures a, b, c, and d and identify the parasite shown. (a) Source: CDC (c) Courtesy of Stephen B. Aley, PhD, Unlv. of Texas at El Paso (b) (d) Source: CDC-DPDX Source: CDC-DPDX
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- Consider that you are working as a laboratory technician in a local hospital and three patients at brought to the laboratory who present with the following: a)symptoms of toxic shock syndrome resulting from food poisoning b) symptoms of respiratory disease associated with the diphtheria toxin c) symptoms of a sexually transmitted disease resulting in the release of pulse from the genitals For each of these cases write the: 1. Name of the microorganisms responsible and 2. The morphological structure of the cells of this microorganismChoose one infectious disease from the list below and use the chain of infection to analyze how it is spread. A. Please provide a comprehensive description of cholera. B. Describe the chain of infection cholera. The chain of infection for the chosen infectious disease must clearly include the following: 1. Identification of a) the pathogen, b) the reservoir c) means of transmission d) the susceptible host 2. Describe how one could break the chain of cholera, such as breaking the pathogen link, by providing a specific intervention. 3. Include references and relevant data.Put Koch’s postulates in order.(a) The disease organism must be isolated in pure culture.(b) The disease organism must be recovered from the in-oculated animal.(c) The specific causative agent must be found in every caseof the disease.(d) Inoculation of a sample of the culture into a healthy, sus-ceptible animal must produce the same disease.
- Answer the following questions: 1. What was the first antibiotic and what was its importance? 2. What does resistance mean? 3. Who is affected by resistance? 4. What if the resistance problem is not solved? 5. Describe the structure of the bacterium (its parts) 6. Can bacteria change? explain 7. Why do Bacteria communicate, what is the purpose? 8. Explain how a bacterium achieves its resistance. 9. What is the use given to antibiotics in production animals? 10. Is this use in animals good practice? 11. Once resistance occurs, what has the scientific community had to do? 12. Do antibiotics only affect negative bacteria? explain. 13. What are the most feared diseases due to antibiotic resistance? 14. Should antibiotics be used against viruses? explain. 15. How can we avoid antibiotic resistance?CASE #2 A 25-year-old Peace Corps worker has just returned from service in Ethiopia. She experiences a sudden onset of asthma-like symptoms. She has no previous history of asthma. An O & P (ova and parasites) on her stool was part of the normal discharge physical, considering the area of assignment, before being released from the Peace Corps. The sample was processed according to standard laboratory procedures. Two suspicious structures were noted during the direct saline wet preparation. The first of the two structures is noted in form # 1; it measures 50 x 40 um. The second structure is depicted in form #2 and measures 18 um in diameter. Form 1 Form 2 1. Which of the structures is (are) considered a pathogenic parasite(s)? Do the presenting symptoms relate to the O & P findings? If so, explain. Look at the structure depicted in form #1. What key characteristics allow you to identify the organism? Name the organism and its stage. 2. 3.Which of the following summarizes the chronological sequence (earliest to latest) of discovery involving human malaria parasites? This is was in a lecture slide, but is also in the textbook. a) liver stages, blood stages, mosquito stages, experimental transmission by mosquito b) blood stages, mosquito stages, liver stages, experimental transmission by mosquito c) mosquito stages, blood stages, liver stages, experimental transmission by mosquito d) blood stages, mosquito stages, experimental transmission by mosquito, liver stages e) mosquito stages, liver stages, blood stages, experimental transmission by mosquito
- A patient in ICU with an indwelling medical device is presenting with invasive infection symptoms, specifically fever and chills. They have been on a course of antibiotics that has not alleviated the condition. a) What type of organism do you suspect is causing the infection and why?Here are four toxins: diphtheria toxin, cholera toxin, tetanus toxin, and exfoliative toxin. Choose two of them and answer the following questions: 1. Is it an exotoxin or an endotoxin? 2. Which bacterial species produces it? 3. Briefly describe its mode of action and how it causes damage to the host cells. Include specific signs and symptoms.As part of your job in an international pharmaceutical company you are given the task of: a) Developing a cheaper method for the production of vitamin C b) Developing a live cholera vaccine Describe how you would accomplish these tasks
- Which one(s) is/are more harmful to the host and why? A) Antifungal agents B) antiprotozoal agents C) antibiotics A and BPropose a simple model of Covid 19 which describes the four forms of disease. 1) Subclinical form, 2) Acute form with recovery, 3) Acute form with Lethal Outcome, 4) Chronic formI AM TRYING TO IDENTIFY THIS UNKNOWN. IMAGE 1 HAS TWO PICTURE OF CATALASE TEST AND BLOOD AGAR TEST. I believe it is one of the following: 1) S. pyo. 2)S. agal . 3)S.pneu. 4)E. faecalis 5)S. aureus 6)S epi. 7)S. sapro. 8)M. luteus Please let me know which test will i need out of the table to justify your reason of picking up the unknown and also how that test justifies it? what characteristics of that test made you pick the unknown?